Product Brief: This Ball Lock Gas Fitting is threaded so you can attach a barbed swivel nut to the fitting along with the appropriate sized tubing. This ball lock fitting works well with 5/16" gas tubing because you

Product Brief: Hi Sir, If you are interested in this products, plz feel free contact us , we will send you the video to show how to open it ,the valve can not open without key, it is unique! We specialize in valve